National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

10°F

-12°C

Humidity 61%
Wind Speed Calm
Barometer 30.33 in (1029.3 mb)
Dewpoint -1°F (-18°C)
Visibility 9.00 mi
Last update 7 Dec 4:55 pm CST
Extended Forecast for

Cataract WI

  • Tonight

    Tonight: Mostly cloudy, with a low around -1. Calm wind.

    Low: -1 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 22. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 22 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Cloudy, with a temperature rising to around 26 by 4am. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 19 °F⇑

    Snow Likely
    then Chance
    Snow

  • Tuesday

    Tuesday: Snow likely after noon, mixing with rain after 3pm. Mostly cloudy, with a high near 36. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Rain and snow, becoming all snow after 3am. Low around 22. South wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 22 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 29. Northwest wind 7 to 11 mph, with gusts as high as 26 mph.

    High: 29 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 0. Northwest wind around 6 mph becoming calm in the evening.

    Low: 0 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow. Partly sunny, with a high near 18. Calm wind becoming northwest around 6 mph in the morning.

    High: 18 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around -2. West wind 5 to 7 mph.

    Low: -2 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around -1. Calm wind.
Monday
Mostly cloudy, with a high near 22. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Snow likely, mainly before midnight. Cloudy, with a temperature rising to around 26 by 4am. South wind 6 to 8 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday
Snow likely after noon, mixing with rain after 3pm. Mostly cloudy, with a high near 36. West wind around 7 mph becoming south in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain and snow, becoming all snow after 3am. Low around 22. South wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Wednesday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 29. Northwest wind 7 to 11 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 0. Northwest wind around 6 mph becoming calm in the evening.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 18. Calm wind becoming northwest around 6 mph in the morning.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around -2. West wind 5 to 7 mph.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 10. Northwest wind 7 to 11 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around -9. Northwest wind 7 to 9 mph, with gusts as high as 22 mph.
Saturday
Partly sunny and cold, with a high near 5. West wind 6 to 8 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -9. West wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 13. Southwest wind 3 to 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cataract WI
 44.08°N 90.84°W
Last Update:
3:16 pm CST Dec 7, 2025
Forecast Valid:
5pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation